At the concentrations of 10-8mol/L, 5.5?l0-8mol/L, 10-7mol/L morphine produced a dose-dependent increase of beating rate in cultured rat heart cells with 9%,32%and 81% respectively. The increase was antagonized by opiate antagonist naloxone ( 10-5mol/L ) , but not affected by propranolol ( 10-5mol/L ) which could cancel the positive chronotropy of isoprenaline ( 10-9mol/L ) on the beating cells. The results support the concept that morphine may be a direct effect on myocadium, perhaps through opiate receptors.

Objective To summarize the clinical characteristics and management of eosinophilic esophagitis (EoE) in China and improve the recognition of clinical doctor for this disease.Methods Electronic database was searched from 1993 to 2012 for case reports of EoE in Chinese patients.Data were enrolled according to the admission criterion,which included relatively complete medical records and cases confirmed by endoscopic biopsy and/or operation pathology.Results Data of 38 patients with EoE from 6 studies were included and analyzed.There were 24 males and 14 females.The age of onset was (47.2 ± 10.9)years.The process of the disease was (1.5 ± 1.8) years.The main symptoms included dysphagia (24/38,63％) and retrostemal pain (22/38,58％).Total 19 patients (83％,19/23) had allergy history and 20 patients (80％,20/25) had elevated blood eosinophil count.Lesions located at the mid-inferior esophagus mainly.Endoscopic manifestation included hyperaemia,erosion and fragile mucosa,and others such as mucosal nodular,ulcer,plaque and white exudates (18/38,47％).Eosinophil count in esophageal mucosa was (45.8 ± 34.1) numbers/HPF.Main treatment included corticosteroid and acid inhibitory medicine.Conclusions EoE is rare in Chinese people.EoE is more common in middle-aged males with chronic onset.Dysphagia and retrosternal pain is the common symptoms.Endoscopy and biopsy pathology are the methods for definition diagnosis.Corticosteroid and acid inhibitory medicine are the main treatment.

Objective Neuroinflammation following traumatic brain injury (TBI) may give rise to neurodisorder.This study aimed to investigate the effect of intranasal delivery of nerve growth factor ( NGF) on neuroinflammation following TBI and its action mechanism in rats. Methods Thirty-six male adult Sprague-Dawley rats were equally divided into a sham , a TBI, and a TBI+NGF group.The rats in the TBI +NGF group were treated with NGF intranasally at 12 and 24 hours after TBI.The levels of IL-1βand TNF-αin the injured cerebral cortex were detected by ELISA , the DNA-binding activity of NF-κB evaluated by EMSA , and the expres-sion of amyloid-β( Aβ42 ) determined by Western blot . Results NGF attenuated the inflammation following TBI .Compared with the TBI group, the level of IL-1βwas obviously decreased in the TBI +NGF group at 12 hours (70.65 ±3.10 vs 37.51 ±1.92) and 24 hours (68.85 ±8.10 vs 36.23 ±2.99, P<0.05), and so was that of TNF-α(47.12 ±7.38 vs 27.63 ±5.77 and 56.15 ±11.20 vs 29.94 ±8.62, P<0.05).The DNA-binding activity of NF-κB was reduced to 111.62 ±0.49 and 131.52 ±0.88, and the expression of Aβ42 to 0.23 ±0.008 and 0.52 ±0.004 at 12 and 24 hours respectively after treatment with NGF , both with statistically significant differences from the TBI group (P<0.05). Conclusion Intranasal administration of NGF attenuates TBI-induced neuroinflamma-tion in rats, which may be associated with its regulatory effect on the Aβ42/NF-κB signaling pathway .

OBJECTIVETo investigate the effects of Bushen Huoxue Fang on the proliferation of rat cardiac fibroblasts and collagen production in the cells.

METHODSRat cardiac fibroblasts were isolated and cultured in DMEM containing 10% (group A) or 20% (group B) or no (group C) serum from rats treated with Bushen Huoxue Fang, with cells cultured in DMEM containing 10% FBS as the control (group D). After 72 h of cell culture, the proliferation of the fibroblasts was detected using CCK-8 kit, and collagen mRNA and protein expressions were examined using RT-PCR and Western blotting, respectively.

RESULTSCompared with that in groups C and D, the cell proliferation decreased significantly in groups A and B, and especially in the latter (P<0.05). RT-PCR demonstrated significant reductions of the mRNAs of type 1 and 3 collagens in groups A and B (P<0.05), and their protein levels were also significantly lowered (P<0.05).

CONCLUSIONBushen Huoxue Fang can effectively inhibit the proliferation of rat cardiac fibroblasts and reduced collagen type 1 and 3 productions in the cells in vitro.

Animals ; Animals, Newborn ; Cell Proliferation ; drug effects ; Cells, Cultured ; Collagen Type I ; biosynthesis ; Collagen Type III ; biosynthesis ; Drugs, Chinese Herbal ; pharmacology ; Fibroblasts ; cytology ; metabolism ; Fibrosis ; prevention & control ; Myocardium ; cytology ; metabolism ; pathology ; Rats ; Rats, Sprague-Dawley

Objective To investigate whether timing of image acquisition influenced infarct size estimation using delayed CeMRI,and the association of left ventricular ejection fraction between magnetic resol3anee imaging and left ventrieulography Was also studied.Method From Junary 2005 to April 2006,27 first,onset AMI patients [23 male,mean age(54.3±10.5)years]were enrolledinthistudr.Allpatients receivedleft ventrictdographyas well as coronary angiography.The average checking time was(13.2±5.2)clays after the onset of AMI.MR imaging was performed with a 1.5-T magnet(SIMENS).After breath-hold eine images were acquired,patients re.ceived afI intravenous bolus of 0.05 mmol/kg Gd-DTPA at a rate of 5 ml/8.A first-pass perfusion scan was ac.qllired.Then a second bolus of 0.15 mmoVkg Gd-DTPA was give.at a rate of 2 mE/Is.After the hyperenhancement localized,the typical short axis slice with hyperenhancement WaS chosen to repeat imaging for IlleasuriIin.farct size every5minutesfrom5minutes after secondinjection ofcontrast until 20minutes.Results Twexty-seren patients showed hyperenhancement at the delayed CeMRI and hypoenhancement at the first pass enhancement(FPE).The average infarct size estimated by CeMRI WaS(17.9士9.8)%of LV nlass.Myocardial enhancement at a repesentative short-axis slice WIllS(7.2±6.2)%of LV Imss at 5 minutes,(8.5±7.4)%at 10 minutes,(7.3±6.3)%at 15 minutes and(6.9-t-6.4)%at 20 minutes respectively.There WltlS significant difference be-tween lmfninmes and 20-minutes enhancement size(P<0.05).Correlations of EF obtained by cineventriculo-grapIIy and MR irr,lg were significant(r=0.867,P<0.01).There were also correlations between infarction size and pe.k CK(r:O.819,P

Botryococcus braunii is a unique colonial green microalga and a great potential renewable resource of liquid fuel because of its ability to produce lipids. Due to the dense cell colonies and rigidly thick cell wall of B. braunii, the traditional Nile red method is usually of low sensitivity and bad repeatability and hard for the determination of lipid content in the cells. By dispersing the colony with ultrasonic, assisting permeation of Nile red across the cell wall with dimethyl sulfoxide and optimizing the staining conditions, we established an improved detection method. The details were as follows: after the colonial algal sample was treated by ultrasonic at 20 kHz for 20 s, 100 W transmitting power and with 1 s on/1 s off intermittent cycle, the equivoluminal 15% (V/V) dimethyl sulfoxide and 3 microg/mL Nile red were successively added and mixed evenly, then the staining system was incubated in dark at 40 degrees C for 10 min, and subsequently was measured by fluorescence spectroscopy detection with an excitation wavelength of 490 nm. Compared with the traditional method, the improved one not only had higher detection sensitivity which was increased by 196.6%, but also had obviously better detection repeatability whose characteristic parameter - relative standard deviation (RSD) was decreased from 10.91% to 1.84%. Therefore, the improved method could provide a rapid and sensitive detection of lipid content for B. braunii breeding and cultivation.
Chlorophyta ; chemistry ; Lipids ; analysis ; Microalgae ; chemistry ; Spectrometry, Fluorescence ; methods ; Ultrasonics

Objective To analyze the clinical and imaging characteristics of pediatric neuromyelitis optica spectrum disorders(NMOSD)in children. Methods The clinical data,imaging manifestations and follow - up data of 16 NMOSD patients at Department of Pediatric Neurology,Shandong Provincial Hospital Affiliated to Shandong Univer-sity between July 2013 and September 2017 were respectively analyzed. Results In 16 patients,initial presentations included optica neuritis(ON)in 5 cases,longitudinally extensive transverse myelitis(LETM)in 6 cases,and among them there were 2 cases with acute disseminated encephalomyelitis and 3 cases with both ON and LETM. Eleven cases received aquaporin - 4(AQP4)antibody examination and 4 cases were found seropositive. One case out of 7 detected cases was found AQP4 antibody positive in cerebrospinal fluid. Eleven cases received optica magnetic resonance imaging (MRI),and 8 cases were found abnormal signals in optic nerve and optica chiasma. The spinal cord MRI showed 13 ca-ses with LETM manifestations,and abnormal signals were found in vertebral segments(5 - 13),and among them 1 case had cervical cord,3 cases were thoracic cord and 9 cases were both of the above. Lesions in the cervical cord in 2 cases were extended upward to the medulla. Fifteen cases received brain MRI and all of them had brain lesions,which were mainly involved in the central and subcortical white matter,thalamus,corpus callosum,brainstem,the junction of spinal cord and medulla,cerebellum,and so on. All patients received treatment for acute attacks with high - dose Methylpred-nisolone and/ or gamma globulin and got obvious relief. Two cases with recurrent ON received treatment of Rituximab and their vision became improved. Fifteen patients were followed up,and 2 cases had limb disorders and 4 cases had visual impairment,other patients had no clinical symptoms. Conclusions Pediatric NMOSD has a diverse clinical pre-sentation at the onset disease. Those who are initial diagnosed acute myelitis,ON and acute disseminated encephalomye-litis should be considered the possibility of NMOSD. Antibody to AQP4 testing can assist the diagnosis. The typical ima-ging characters of NMOSD children are abnormal signals in the high expression area of AQP4. Intracranial lesions are more common in children. The acute treatment includes the high - dose Methylprednisolone and gamma globulin. Rituximab can be used for the recurrent patients.

Objective:To analyze the comprehensive quality of the "Chinese Journal of Endemiology" and provide a basis for improving the influence of the journal.Methods:The iournal evaluation data of "Chinese Science and Technology Journal Citation Reports (Core Version)" (2013 - 2017 periodicals, hereinafter referred to as the journal citation report) as a statistical source, epidemiological and environmental medicine core journals as reference objects, an analysis of the academic influence of "Chinese Journal of Endemiology" within journals in the same field was carried out. The overall quality of the journal was evaluated through adopting the dynamic evaluation model of academic influence of sci-tech periodicals, combined with the total cited frequency, influencing factor, he cited rate, source of literature, immediacy index, international papers ratio, fund papers ratio of "Chinese Journal of Endemiology" in 2013 - 2017 edition of the journal citation report, and calculating the academic impact assessment score ( I), and 5-year growth rate in 2012 - 1016. Results:The impact factors of the "Chinese Journal of Endemiology" in 2012 - 2016 were 0.745, 1.243, 1.507, 1.390, and 1.221, respectively; ranked 4th, 3rd, 2nd, 2nd and 2nd in the same field medical core journals (24 kinds), respectively. The total citation frequencies were 1 167, 1 682, 1 164, 1 688, and 1 584, respectively; ranked 9th, 5th, 7th, 7th and 7th in the same field medical core journals (24 kinds), respectively; the comprehensive scores were 40.4, 45.8, 42.0, 42.4, and 41.5, respectively; ranked 5th, 7th, 6th, 7th and 7th in the same field medical core journals (24 kinds), respectively. The results of the dynamic evaluation model of academic influence showed that the I values of the "Chinese Journal of Endemiology" in 2012 - 2016 were 240 035.56, 377 602.24, 434 144.09, 612 260.69, and 529 411.90, respectively; and the 5-year growth rate was 0.21. Conclusion:The academic influence of the "Chinese Journal of Endemiology" is on the rise, and the comprehensive quality of the journal is constantly improving.

Objective To analyze highly cited papers published in Chinese Journal of Endemiology from 2007 to 2015,to provide direction of invitation for contributions and further improve the quality of the periodical.Methods In WanFang data knowledge service platform (http://www.wanfangdata.com.cn/),highly cited papers were searched,which were cited ≥ 15 times in Chinese Journal of Endemiology from 2007 to 2015,and the retrieval date was March 20,2017.These papers were carried out statistical analysis by publication time,column,author,workunit,regional distribution and fund program.Results Totally 2 133 papers were published from 2007 to 2015,including 78 highly cited papers,accounting for 3.66％,citation frequency were 15-88 times,the average was 26.0 times.Of the highly cited papers,field investigation paper was the highest (24),accounting for 30.77％;followed by editorial (19),accounting for 24.36％;reviews (10) and experiment research articles (including experiment research and original articles,8),accounting for 12.82％ and 10.26％,respectively.There were 9 authors contributed two or more highly cited papers,they were in 4 work units.There were 7 work units contributed two or more highly cited papers,Center for Endemic Disease Control,Chinese Center for Disease Control and Prevention,Harbin Medical University was the highest (35),the average was 29.8 times.Highly cited papers distributed in 17 provinces (autonomous regions and municipalities),Heilongjiang Province was the highest (38),and the average was 28.9 times.Totally 51 highly cited papers were supported by fund program,accounting for 65.38％ (51/78).Conclusions Highly cited paper presents the trend of columns,authors,work units,regions and fund programs.The editorial department can refer to the above results for solicitation articles.

Manuscript retreat is an important link in the publication of sci-tech periodical papers, including the academic perfection of the paper and modification according to the requirements of the journal publishing standard. It is an important procedure to guarantee the quality of academic and periodical. Repeated retreat will lead to a longer paper publishing cycle, affecting the timeliness of the paper. Taking "Chinese Journal of Endemiology" as an example, this paper summarizes the reasons for repeated retreat of sci-tech periodical papers from three aspects: author, reviewer and editor, and puts forward the countermeasures.